Re: Flyback Pinouts

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Allanh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <allanh-at-starband-dot-net>

10 Khz is a bit low for the flyback. The pins you are using are probably not
the right ones.
The ones to look for usually are isolated from the others with at least one
empty space. The resistance between the correct two pins is often higher
than any others. There will be no connection between the input winding and
any other
pins. If you can get your hands on a schematic, if would reall help. Look at
the circuit board and trace the runs that connects to the original drive
transistor and that will give you a clue.


hope this helps.
allan

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, July 06, 2002 5:56 AM
Subject: Flyback Pinouts


>
> Original poster: "Marry Krutsch by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <u236-at-earthlink-dot-net>
>
> Hi everyone.
>
> I just tore into two similar computer monitors, and came away with two
> identical flybacks (they're HUGE :-)).  I can't seem to hook them up
> correctly, though.  I tested the pin-to-pin resistances, and thought (as
> usual), that the lowest resistance signals the primary winding.  I fired
> it up, and got arcing BETWEEN pins before I got an arc between the HV
> terminal and ground.  I tested many windings, but just got arcing
> between different pins.  My testing was abruptly halted by my drive
> MOSFET failing closed circuit ;-(.  I know the flyback is good, since it
> did produce output from the HV terminal.  BTW, I was driving it with 12
> VDC at about 10 kHz.
>
> My questions are...  Have I simply not found the right winding to
> drive, or is there something else I need to do?  Is there a better way
> to find the primary winding??
>
> I want to use both flybacks to drive my mini coil, once it's finished.
> I've already made the secondary; it's 1 1/4" wide and 5" tall.  It's
> gonna be so cool! :-)).
>
> Thanks in advance,
> Winston K.
>
>
>
>